According to the studies he cited, 7 percent of people’s twitter followers are actually spambots; 30 percent of social media users are deceived by spambots and chatbots; and 20 percent of social media users accept friend requests from unknown people, 51 percent of which are not human. […] When it comes to “astroturfing” — the practice of creating fake grassroots movements to influence opinions — the hit ratio on email spams is about 12.5 million to 1. In order to create an astroturf movement on the scale of the anti-SOPA movement in 2011, every person on earth would have to receive the same spam message 8 times.